I would very much like to have this as well. I think evince worked well enough on the n810 to be very usable. And it supports a ton of formats like djvu. I dont know if anyone is working on porting that.

Debernardis started a thread about this a few weeks back:
http://talk.maemo.org/showthread.php?t=38606

That thread went largely unnoticed for some reason. I think the community is i dire need of a good pdf-reader. I mean ebook-reading is one of the strongest use cases imho.

Anyone working on evince for Maemo5? I want this so much that I am willing to put some effort in myself if it is needed.